:root{--bg: #f6f7f9;--surface: #ffffff;--text: #1f2933;--muted: #5f6b7a;--border: #dde2e8;--accent: #2563eb;--accent-soft: #e0eaff;--error: #c62828;--draft-bg: #fff4d6;--draft-text: #7a5300;--subject-english: #7c3aed;--subject-math: #2563eb;--subject-japanese: #dc2626;--subject-science: #15803d;--subject-social: #c2410c;font-family:system-ui,-apple-system,Hiragino Sans,Yu Gothic UI,Meiryo,sans-serif;line-height:1.6;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}@media(prefers-color-scheme:dark){:root{--bg: #14171c;--surface: #1d2128;--text: #e6e9ee;--muted: #9aa5b4;--border: #2f3540;--accent: #6b9bff;--accent-soft: #24324d;--error: #ff7b7b;--draft-bg: #3d3320;--draft-text: #ffd27a;--subject-english: #b79bff;--subject-math: #7aa7ff;--subject-japanese: #ff8a8a;--subject-science: #6fd08f;--subject-social: #ffa66b}}body{margin:0;background:var(--bg)}a{color:var(--accent)}.layout{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:1.2rem;color:var(--accent);text-decoration:none}.header-right{display:flex;align-items:center;gap:12px}.role-badge{font-size:.8rem;padding:2px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}.main{flex:1;width:100%;max-width:720px;margin:0 auto;padding:24px 16px;box-sizing:border-box}.footer{display:flex;justify-content:center;gap:16px;padding:16px;font-size:.85rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px 16px}.card h1{font-size:1.4rem;margin:0 0 8px}.form{display:flex;flex-direction:column;gap:16px;max-width:400px;margin:0 auto}.form label{display:flex;flex-direction:column;gap:6px;font-weight:600}.form input{font:inherit;padding:12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}.form button{font:inherit;font-weight:700;padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer}.form button:disabled{opacity:.6}.link-button{font:inherit;background:none;border:none;color:var(--accent);cursor:pointer;padding:0}.muted{color:var(--muted);margin:0}.error{color:var(--error);margin:0}.center{text-align:center}.table{width:100%;border-collapse:collapse;margin-top:12px}.table th,.table td{text-align:left;padding:8px;border-bottom:1px solid var(--border)}.stats{list-style:none;padding:0;margin:12px 0 0}.stack{display:flex;flex-direction:column;gap:12px}.stack h1,.stack h2,.stack h3,.stack p,.stack ul,.stack ol{margin:0}.card h2{font-size:1.1rem;margin:0 0 4px}.small{font-size:.85rem}.row{display:flex;flex-wrap:wrap;gap:8px}.button{display:inline-block;font:inherit;font-weight:700;text-align:center;text-decoration:none;padding:12px 16px;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer}.button.secondary{background:var(--surface);color:var(--accent);border:1px solid var(--accent)}.menu-card{display:flex;flex-direction:column;gap:4px;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);text-decoration:none}.menu-card.primary{border:2px solid var(--accent)}.menu-card span{color:var(--muted);font-size:.9rem}.list{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px}.progress{height:8px;border-radius:999px;background:var(--accent-soft);overflow:hidden}.progress-bar{height:100%;background:var(--accent);transition:width .2s}.question{font-size:1.25rem;line-height:1.5}.section-note{padding:8px 12px;border-radius:8px;background:var(--accent-soft)}.choices{display:flex;flex-direction:column;gap:8px}.choice{font:inherit;padding:14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);cursor:pointer;text-align:left}.choice:hover,.choice:focus-visible{border-color:var(--accent)}.ranking{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;counter-reset:rank}.ranking li{counter-increment:rank;display:flex;flex-direction:column;gap:4px}.ranking li h2:before{content:counter(rank) ". 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var(--subject);box-sizing:border-box}.dot.done{background:transparent}.calendar-count{font-size:.65rem;color:var(--muted)}.calendar-day.all-done .calendar-count{color:var(--accent)}.day-dialog{width:min(480px,calc(100vw - 32px));max-height:calc(100vh - 64px);box-sizing:border-box;border:1px solid var(--border);border-radius:12px;padding:20px 16px;background:var(--surface);color:var(--text)}.day-dialog::backdrop{background:#0006}.day-dialog .calendar-event{font-size:.85rem;padding:4px 8px;white-space:normal}